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Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc -14 Vdc Input
0.75 Vdc - 5.0 Vdc/6 A Output
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
Vo, set≤3.3 V
Vo, set=5.0 V
4.5 V
7.0 V
12 V
14 V
Input Current (full load)
Vo=5.0 V
Vo=3.3 V
Vo=1.8 V
Vo=0.75 V
-
2.75 A
1.85 A
1.05 A
0.55 A
4.8 A
3.2 A
1.8 A
Input Current (no load)
Vo=5.0 V
Vo=0.75 V
-
100 mA
20 mA
Remote Off Input Current
-
3 mA
5 mA
Input Reflected Ripple Current (pk-pk)
-
120 mA
200 mA
Input Reflected Ripple Current (rms)
-
60 mA
100 mA
With simulated source impedance of 1
uH, 5 Hz to 20 MHz and two 100 uF/25
V external input tantalum capacitors.
I
2t Inrush Current Transient
-
0.002 A
2s0.02 A2s
Turn-on Voltage Threshold
Vo, set≤3.3 V
Vo, set=5.0 V
-
4.3 V
6.0 V
4.5 V
6.5 V
Turn-off Voltage Threshold
Vo, set≤3.3 V
Vo, set=5.0 V
-
4.0 V
5.5 V
4.3 V
6.0 V
Shut down or below 90% set point.
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
-2%Vo,set
-
2%Vo,set
Vin=12 V, full load
Output Voltage Set Point
1
-2.5%Vo,set
-
3.5%Vo,set
Load Regulation
-0.7%Vo,set
0.4%Vo,set
0.7%Vo,set
Io=Io, min to Io, max
Line Regulation
-0.7%Vo,set
0.3%Vo,set
0.7%Vo,set
Vin=Vin, min to Vin, max
Regulation Over Temperature
(-40
°C to +85 °C)
-
0.5%Vo,set
-
Tref=Ta, min to Ta, max
Output Current
0 A
-
6 A
Current Limit Threshold
6.8 A
-
15 A
Short Circuit Surge Transient
-
0.25 A
2s
-
Ripple and Noise (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
100 mV
80 mV
35 mV
140 mV
120 mV
7 0 mV
Ripple and Noise (rms)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
35 mV
25 mV
10 mV
50 mV
40 mV
15 mV
Tested with 0-20 MHz, with
10 uF/10 V tantalum
capacitor & 1 uF/10 V
ceramic capacitor at the
output
Turn on Time
-
6 mS
12 mS
Overshoot at Turn on
-
0%
3%
Output Capacitance
ESR
≥ 1mohm
ESR
≥ 10mohm
0 uF
-
1000 uF
2200 uF
Transient Response
50% ~ 100% Max Load
-
200 mV
350 mV
Settling Time
-
25 uS
50 uS
100% ~ 50% Max Load
-
200 mV
350 mV
Settling Time
All outputs
-
25 uS
50 uS
di/dt=2.5 A/uS; Vin=12 V; and
with 10 uF/10 V tantalum
capacitor & 1uF/10 V ceramic
capacitor at the output.
Notes
: All specifications are typical at nominal input (Vin=12 V), full load at 25 °C unless otherwise stated.
1. Over all operating input voltages, resistive loads and temperature conditions.